Description

The UDS V.3227 is a high-speed data modem fully compatible with the V.32 specification and capable of throughput rates up to 38,400 bps. The V.3227 transmits both synchronous and asynchronous data full duplex over both dial-up and leased lines.

Fully compatible with both CCITT V.32 for 9600 bps communications and V.42/ V.42 bis for error correction and data compression

Maximum data rate of 33,400 bps using V.42 his or 19,200 bps using MNP® Level 5 data compression

Full auto-mode compatibility automatically adjusts data rate to 9600, 4300, 2400, 1200 or 300 bps (CCITT V.32, V.22bis and Bell 103)

Operates full duplex over dial-up lines or 2-wire or 4-wire leased lines in synchronous or asynchronous mode

Tolerates high line noise using trellis coded modulation at 9600 bps

Automatic dial back-up for dedicated lines

Automatic dial and answer-Hayes`- compatible “AT” command set for asynchronous applications, CCITT V.25 bis for synchronous applications

Easy-to-use LCD display for set-up and operation

The UDS V.3227 is a high-speed data modem fully compatible with the V.32 specification and capable of throughput rates up to 38,400 bps. The V.3227 transmits both synchronous and asynchronous data full duplex over both dial-up and leased lines.

Description

The UDS V.3227 is a high speed modem ideally suited for applications requiring high data throughput and failure free operation. The modem adheres to the CCITT V.32 and V.22 bis standards for data transmissions up to 9600 bps (bits per second).

For accurate data transmission over worst-case telephone lines, the V.3227 incorporates V.42 LAP-M and MNP classes 2 through 4 error control functions as well as trellis coded modulation with echo cancellation technology. With the data compression offered by V.42 bis, the V.3227 can increase data throughput by up to a factor of four, effectively increasing modem speed to 38,400 bps. With the data compression offered by MNP Level 5, data throughput can be increased by up to a factor of two to 19,200 bps.

The V.3227 transmits full duplex, synchronous or asynchronous data at 9600, 4800, 2400 or 1200 bps and asynchronous data at 300 bps. An intelligent modem, the device automatically adjusts the data rate and modulation scheme to the remote V.32, V.22 bis or Bell 103 modem with which data is being exchanged.

For reliable performance, the V.3227’s advanced microprocessor design incorporates near- and far-end echo canceling, automatic adaptive line equalizing and trellis

convenient, easy use. The auto dialer is compatible with the industry standard Hayes “AT” command set for asynchronous applications and CCITT V.25 bis for synchronous applications. Dial back-up from leased line to dial line is included to allow the unit to operate in the event of a leased line failure.

Integral diagnostics aid the user in isolating communication faults to the data communications equipment, data terminal equipment or the phone line. For easy setup and for determining the status of modem operation, the V.3227 data modem features a 2-line by 16-character liquid crystal display with three control pushbuttons and six LED indicators.

The V.3227 is available as both a standalone unit and a plug-in card for use in the Universal Data Shelf “enclosure.

Test Features

Analog Loopback
Analog Loopback with Test Pattern
Local Digital Loopback
Remote Digital Loopback
Remote Digital Loopback with Test Pattern
Test Pattern Generation/Checking
Remote Analog Loopback l4-wire only)